Many workers heading into retirement are woefully unprepared financially and have no idea of the tax impacts of taking on a part-time job to ease the fiscal pain, researchers warn. (Image courtesy of Creative Commons)

Any of the 10,000 Baby Boomers retiring every day who are contemplating a second job in their retirement may want to reconsider, due to an unfamiliar network of federal and state taxes that can serve as significant work disincentives, advises a University of California, Berkeley, economist and professor of law and a team of fellow researchers.

"They’re completely meaningless," says Auerbach. He says they simply don't factor in the implicit and explicit taxes that those ages 50 through 79 face from the offsets between income, age and benefits. Auerbach said the research highlights a need for much more transparency in the nation’s retirement and fiscal systems. The Social Security Administration could provide the information, he said, but likely needs a push to do so by "someone in government who thinks it's important." That someone, Auerbach suggested, could be in the presidential administration or in Congress.

Auerbach and his fellow researchers — Laurence Kotlifkoff, of Boston University and the Fiscal Analysis Center; Darryl Koehler, of Economic Security Planning Inc. and the Fiscal Analysis Center; and Manni Yu, of Boston University — did the math using data collected from older respondents to the Federal Reserve's 2013 Survey of Consumer Finances and special software they developed.

"We find that working longer, say an extra five years, can raise older workers' sustainable living standards," they report in their paper.

Taking a second job to supplement income during retirement can prove costly, researchers warn. (Creative Commons photo)

But the researchers report the impact is far smaller than suggested, in large part due to high net taxation of labor earnings. They also warn that many boomers now face or will face extremely high work disincentives arising from the hodgepodge and uncoordinated design of the nation's fiscal system.

"Our findings show that older workers typically face high, very high or remarkably high marginal net taxation on their extra earnings," they write, adding that work disincentives are highest for those at the bottom and top levels of resource distribution.

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"Our findings suggest that Uncle Sam is, indeed, inducing the elderly to retire," they conclude. "Of particular concern is Medicaid and Social Security's complex earnings test and clawback of disability benefits," the researchers summarized. A clawback is the recovery of funds disbursed by a company, pension or government. "But an open question is the extent to which the elderly correctly perceive these disincentives," the report says. "Indeed … it's hard to believe that policymakers, themselves, are cognizant of the level and spread of the work disincentives they are imposing on the elderly."

The researchers found that the marginal net tax rate linked to a significant increase in retirement earnings, such as $20,000 a year from a part-time job, can for many elderly be "dramatically higher than that associated with earning a relatively small, say $1,000 a year, extra amount of money."